A sound wave in air has a pressure amplitude equal to4.10 multiplied by10-3 N/m2. Calculate the displacementamplitude of the wave at a frequency of 9.4 kHz. (Note: Use the following values, asneeded. The equilibrium density of air is rho = 1.20kg/m3; the speed of sound in air is v = 343m/s. Pressure variations ΔP are measuredrelative to atmospheric pressure, 1.013 multiplied by 105Pa.)
m

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

Ways that industry and agriculture use physical properties to separate substances